_POSIX_SOURCE      15 arm/arm_init.c #define _POSIX_SOURCE 1
_POSIX_SOURCE      22 contrib/libtests/pngvalid.c #define _POSIX_SOURCE 1
_POSIX_SOURCE      20 contrib/libtests/tarith.c #define _POSIX_SOURCE 1
_POSIX_SOURCE      40 pngpriv.h      #define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
_POSIX_SOURCE      34 pngtest.c      #define _POSIX_SOURCE 1